Particulate sorbent smoke filter
AssigneeCigarette Components Limited
InventorsJohn Charlton, Paul Francis Clarke, Ernest Brian Hayes
Life of this patent
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Abstract
A smoke filter consists of substrate threads and/or strips each pre-coated with particulate sorbent (e.g. activated carbon granules), gathered together in solid or tubular rod form e.g. within a containing sleeve. When the gathered threads and/or strips form a tubular body, this may be provided with a core.
Claims8
A filter element consisting essentially of up to 20 longitudinally aligned substrate threads, and particulate sorbent in an amount in the range of 0.25 to 2.0 milligrams per millimeter of each substrate thread, each said substrate thread being substantially uniformly individually pre-coated with said particulate sorbent adhering thereto and gathered together and held in rod form.
A filter element consisting essentially of up to 20 longitudinally aligned substrate threads, and particulate sorbent in an amount in the range of 0.25 to 2.0 milligrams per millimeter of each substrate thread, each said substrate thread being substantially uniformly individually pre-coated with said particulate sorbent adhering thereto and gathered together and held in tube form.
A filter element comprising particulate sorbent and up to 15 longitudinally aligned substrate threads, said particulate sorbent being present in an amount in the range of 0.25 to 2 milligrams per millimeter of each substrate thread, said substrate threads being substantially uniformly individually pre-coated with said particulate sorbent adhering thereto and gathered together and held in rod form or in tube form.
Dependencies are inferred from the claim text.